M08045 datasheet(24/49 Pages) MA-COM

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Functional Description

M08035, M08045 Data Sheet V1

MACOM

™

080x5-DSH-001

4.5

Logic Signals

To allow interfacing to logic levels other than the 1.2 V core voltage, or any of the analog input and output supplies,

the digital interface signals are referenced to DVDDIO which is an isolated power domain. DVDDIO may be supplied

from any voltage ranging from 1.2 V to 3.3 V. Many digital control pins have three states, high (H), low (L), or

floating (F). In order to assert the F or floating state, the pin must be left unconnected or undriven.

4.6

Control Modes

The M08035/M08045 may be configured in four separate control modes. The control mode is determined by the

setting of the MODE_SEL pin as shown in Table 4-1 below.

The MIC mode is a subset of the two-wire Interface mode and is initiated by writing to special reserved address

when the device is set in two-wire Interface mode.

Table 4-1.

Control Mode Setting

MODE_SEL

Control Mode

MODE_SEL = F

Hardware Control Mode (HIC)

MODE_SEL = H

Four-wire Serial Interface Control Mode (SIC4 or SPI)

MODE_SEL = L

Two-wire Serial Interface control Mode (SIC2 or I2C)

Memory Interface Configuration Mode (MIC)

When the reclocker is configured through an external EEPROM

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